Sudoku solver and generator implemented in Rust
- Performs no heap allocations during the solving process, and only allocates on the stack when no logical reduction is possible (i.e. a guess is required)
- Implement solvers based on http://angusj.com/sudoku/hints.php
- Seems to be fairly fast, solves the "World's hardest sudo puzzle" in under one millisecond
- Different difficulty levels for generator